Charge-pump regulator for battery-powered rails
The MAX1759EUB+: Its 100 mA output ceiling suits low-power sensor nodes, portable instruments, and bias supplies where an inductor-based converter would waste board space. The output is adjustable or fixed at 3.3 V, selected by pin-strapping, so the same BOM line serves both a generic adjustable rail and a common 3.3 V logic supply without an extra resistor divider.
Switching frequency and external component sizing
Switching at 1.5 MHz, the charge pump keeps the flying capacitors small — typically 1 µF ceramic — which fits the 10-pin uMAX/uSOP footprint without crowding the passive array. No synchronous rectifier means the output diode drop adds to the dropout, but at 100 mA the penalty is manageable and the part count stays low.
Temperature grade and operating envelope
ROHS3 compliance clears it for global shipping under current environmental regulations.